stdnum
Version:
Standard Number Validation
65 lines • 5.72 kB
JavaScript
import * as exceptions from '../exceptions';
import { isValidDate, strings } from '../util';
function clean(input) {
return strings.cleanUnicode(input, ' /');
}
const impl = {
name: 'Czech Birth Number',
localName: 'Rodné číslo',
abbreviation: 'RČ',
compact(input) {
const [value, err] = clean(input);
if (err) {
throw err;
}
return value;
},
format(input) {
const [value] = clean(input);
return strings.splitAt(value, 6).join('/');
},
validate(input) {
const [value, error] = clean(input);
if (error) {
return { isValid: false, error };
}
if (value.length !== 10 && value.length !== 9) {
return { isValid: false, error: new exceptions.InvalidLength() };
}
if (!strings.isdigits(value)) {
return { isValid: false, error: new exceptions.InvalidFormat() };
}
const [yy, mm, dd] = strings.splitAt(value, 2, 4, 6);
const mon = (parseInt(mm, 10) % 50) % 20;
let year = parseInt(yy, 10) + 1900;
if (value.length === 9) {
if (year > 1980) {
year -= 100;
}
if (year > 1953) {
return { isValid: false, error: new exceptions.InvalidComponent() };
}
}
else if (year < 1954) {
year += 100;
}
if (!isValidDate(String(year), String(mon), dd, true)) {
return { isValid: false, error: new exceptions.InvalidComponent() };
}
if (value.length === 10) {
const [front, check] = strings.splitAt(value, -1);
const sum = (parseInt(front, 10) % 11) % (year < 1985 ? 10 : 11);
if (String(sum) !== check) {
return { isValid: false, error: new exceptions.InvalidChecksum() };
}
}
return {
isValid: true,
compact: value,
isIndividual: true,
isCompany: false,
};
},
};
export const { name, localName, abbreviation, validate, format, compact } = impl;
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